摘要
在涠西南凹陷东区B洼陷发现的涠12－1断鼻油气藏，是一个中型高丰度、高产、轻质油藏。该油藏的形成是由于涠二段有较厚的湖相泥岩既作盖层，又作断鼻侧的侧封层；涠三段有三角洲砂体，砂岩发育，单层厚度大，物性好，与上覆涠二段泥岩配置成极佳的储盖组合。其油气是通过断层从流沙港组运移到涠洲组各自的圈闭中。这个富集、高产油气藏的发现，加深了对凹陷东区涠洲组石油地质条件和成藏模式的认识。
Wei 12-1 located in B sub-sag of eastern part of ws weizhou sag is a medium-sized structural oil/gas pool on a faulted nose high, which is characlerized by high-richness, high productive field and low-gravity oil. It is formed by optimun assemblage of seal and reservoir rocks, in which clay-stones of the second member of Weizhou formation function as cap rocks and lateral seals against faults , lacustrine sandstones in the third member of Weizhou formation developed well, with thick individual beds and good petrophysical quality. Hydrocarbon migrated from Liusha Gang formation to the traps wthin Weizhou formation through oil source fault. The discovery of this rich and high productive field has developed the understanding of petro-geological conditions and oil accumulation model the of Weizhou formation in eastern part of the sag.
出处
《中国海上油气（地质）》
1996年第2期76-82,共7页
China Offshore Oil and Gas(Geology)
